Annelids and arthropods have a(n) dorsal hollow nerve cord
____________________ Indicate whether the statement is true or false.
False - solid ventral
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The helices and sheets of amino acids form a protein's
A. primary structure. B. secondary structure. C. tertiary structure. D. quaternary structure.
Why do peanuts grow underground? Because they
a. are a product of the root. b. are a product of the stem, which bends to the soil surface. c. are a product of the flower, which bends to bury itself in the soil. d. bud off the tuber, like the eyes of a potato. e. are a part of the seed that never grows above the soil.
With __________, a chemical substance is passed
from organisms at each trophic level to those above and becomes increasingly concentrated in body tissues. Fill in the blank(s) with the appropriate word(s).
Single-gene disorders are described by all of the following except
A. they occur in 1 out of every 100 people. B. they are cannot be tracked using a pedigree chart. C. we know the most about them compared to other types of disorders. D. they could be caused by dominant or recessive allele. E. causative alleles may persist in the population due to a survival advantage.